§ 99.11  SAFETY PRECAUTIONS.
   Every person making an excavation for any purpose in any street or sidewalk shall securely cover the excavation with planks or place ropes around the same three feet from the ground, and shall place a sufficient number of red lights around the excavation before dark and keep them burning during each night the excavation is open.
('72 Code, § 17-14)  Penalty, see § 10.99